Angle-cock for air-brake systems.



Nor'mmev. PATENTED JUNE 23, 1903.

A. DE HODELL.

ANGLE 000K FOR AIR BRAKE SYSTEMS.

APPLICATION FILED JAN. 28, 1803.

I0 MODEL.

PATENT Patented June 23,- 1903.

OFFICE.

ALFRED ou HODELL, or LIMA, omo.

ANGLE-COCK FOR AIR-BRAKE SYSTEMS.

SPECIFICATION forming part of Letters Patent No. 731,867, dated June 23, 1903.

Application filed January 28, 103. Serial No. 140.925. (No model-l To all whom it may concern.-

Be it known that I, ALFRED DnHonELL, a

citizen of the United States, residing at Lima,

in the county of Allen and State of Ohio, have invented new and useful Improvements in Angle-Cocks for Air-B rake Systems, of which the following is a specification.

This invention relates to angle-cocks for air-brake systems.

The object of the invention is in a ready,-

simple, thoroughly feasible and practical manner and without necessitating any material change in the structural arrangement of existing cocks to eifect automatic application of the brakes throughout the whole length of a train, even though one or more of the cooks he closed, thereby to obviate danger of accidents, which frequently result where one or.

more of the cooks in the main air-pipe'are be hereinafter fully described and claimed.

In the accompanying drawings, forming a part of this specification, and in which like numerals of reference indicate corresponding parts, there is illustrated one form of embodiment of the invention capable of carrying the same into practical operation, it being understood that the elements therein exhibited may be varied or changedas to the shape, proportion, and exact manner of assemblage without departing from the spirit thereof, and in these drawings+ Figure lis a view in sectional elevation exhibiting the position of the parts of the cock when open to permit free passage of air through the air-pipes or hose. Fig. 2 is a similar View exhibiting the safety-ports by which the brakes may be applied even though the cock be shut, as shown. Fig. 3 is a view inele'vation of the rear portion of a car, showing the manner in which the air-pipe on the last caris sealed and also the manner in which it is held-out of contact with the ground to prevent clogging of the valve and the pipe.

Referring to the drawings, 1 designates the casing of an ordinary angle-cock, 2 the tapering plug-valve, and 3 the operating-handle. These parts may be of the usual or any preferred construction, and therefore need no detailed description. l

The gist of the present invention resides in providing the upper portion of the valve 2 and on opposite sides and at right angles to the usual port 4 with a pair of safety-ports 5, which communicate at their lower ends with the interior of the casing and at their upper ends discharge beneath the head or collar 6 of the handle, as clearly shown in. Fig. 2. When the valve is closed thus to bring the port/1 into alinement with the passage-Way through the casing, the safely-ports perform no function; but should the valve be closed through an accident the air will escape through the safety-ports to the outside air, and thusautomatically apply the brakes and 5 notify the engineer that one or more of the angle-cocks are open. The operation of the ports is absolutely positive, and being disposed in the manner shownthat is, beneath the head of the operating-handle-will be protected from clogging, so that they-may be relied upon under all conditions for performing the functions designed.

The free end of the air-pipe at the end of the train will be sealed by a dummy coupling 7, (shown in Fig. 3,) which latter is secured to the end of the car by a chain or the like, and when the said pipe is thus sealed it will positively be held out of contact with the ground, so that danger of clogging the pipe orthe valvewill be positively obviated, and,

further, all danger to the trainmen in uncoupling the pipes, such the danger of having cinders or dirt violentlyblown into the face, which frequently results in the loss of eyesight, will be overcome.

The application of this form of angle-cock to the ordinary Westinghouse brake will not require any change in the structural arrangement other than the provision of the safetyports 5, and the air escapes beneath the head of the operating-handle.

While the improvements herein described IOO valve provided'wit-h the usual port, and at its upper portion, on opposite sides and at right angles to the port with safety-ports discharging upwardly into the outside air beneath the head of the operating-handle of the valve.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

ALFRED DE HODELL.

Witnesses p F. H. BANKS, DANIEL MCKERREN. 

